Can you peel back or remove the rubber cover? Sounds like the U joint is loose. Plus, there are only 3 pieces in that assembly.

On double pedals, that is usually the weakest link and goes out first. I don't have a Mapex, but that can be a common prob for us double pedallers.

The rubber cover is glued and will not let me move it. It's still under warranty so I will not break the seal at this point to look inside. I contacted Mapex today about this and I am waiting for a response.

__________________Psalm 150:5 Praise him with loud cymbals! Praise him with resounding cymbals!